This is just about taking care of your body, eating right and drinking fluids. This has nothing to do with practicing at GB. These guys get paid too much and have too much support around them to be cramping up.

I don't really put much stock into the Greenbriar makes us soft theory. Yea they got cramped today but it's because they weren't used to the heat. If the football season was played in the summer I would definitely want training camp to be down south in the heat. All the games we have to start the season are either indoors or in climates similar to Greenbriar. After week 5 or so temperatures start dropping. I don't see how exposing them to extreme heat in preseason helps much.
Even if you are constantly drinking water here in NOLA you are going to still get dehydrated working like they do. Dehydration can lead to hamstring and groun pulls.
In this regard it may be better to work in mild climate.
Working in heat may toughen them up mentally a little but I doubt it.